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Full Discussion: ksh script
Top Forums UNIX for Dummies Questions & Answers ksh script Post 37124 by criglerj on Thursday 12th of June 2003 06:22:22 PM
Old 06-12-2003
If raw ksh is required, I guess the OP's final solution was fine. In awk:
Code:
nawk -v sought=0005 '/^[1-9]/ { i=0 }
/^0/ { a[++i] = $0 }
$1 == sought { for (j=1; j<=i; j++) print a[j] }'

This restarts accumulating lines whenever the number on a line doesn't start with zero. It gathers all the lines that start with zero, then when it sees the number "sought", it prints the numbers that have accumulated since the last non-zero.

If a group contains more than one copy of the number sought, you may not get the expected result. There are other gotchas as well, to get around them requires more code and some knowledge about the shape of your data. More work is also required if there is more than one group that contains your number and you want a blank line between, etc.
 

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LEARN ABOUT FREEBSD

ucblinks

ucblinks(1B)					     SunOS/BSD Compatibility Package Commands					      ucblinks(1B)

NAME

       ucblinks - adds /dev entries to give SunOS 4.x compatible names to SunOS 5.x devices

SYNOPSIS

       /usr/ucb/ucblinks [-e rulebase] [-r rootdir]

DESCRIPTION

       ucblinks  creates symbolic links under the /dev directory for devices whose SunOS 5.x names differ from their SunOS 4.x names. Where possi-
       ble, these symbolic links point to the device's SunOS 5.x name rather than to the actual /devices entry.

       ucblinks does not remove unneeded compatibility links; these must be removed by hand.

       ucblinks should be called each time the system is reconfiguration-booted, after any new SunOS 5.x links that are needed have been  created,
       since the reconfiguration may have resulted in more compatibility names being needed.

       In  releases prior to SunOS 5.4, ucblinks used a  nawk rule-base to construct the SunOS 4.x compatible names. ucblinks no longer uses  nawk
       for the default operation, although  nawk rule-bases can still be specifed with the -e option.  The  nawk rule-base equivalent to the SunOS
       5.4 default operation can be found in /usr/ucblib/ucblinks.awk.

OPTIONS

       -e rulebase     Specify rulebase as the file containing nawk(1) pattern-action statements.

       -r rootdir      Specify rootdir as the directory under which dev and devices will be found, rather than the standard root directory /.

FILES

       /usr/ucblib/ucblinks.awk        sample rule-base for compatibility links

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWscpu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       devlinks(1M), disks(1M), ports(1M), tapes(1M), attributes(5)

SunOS 5.10							    13 Apr 1994 						      ucblinks(1B)
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